38
For Serial Interface
Transmission Speed (DIP Switches 3/4)
bps: bits per second
* When DIP switches 3 and 4 are set to ON, the value (initially 19200) can be set to any of the 
values listed in the lower portion of the row using a command, memory switch setting mode, or 
the TM-L500A Utility. (See "Setting the Memory Switches" on page 45.)
SW Function ON OFF
Initial
setting
1 Reserved (Do not change) Fixed to ON ON
2 Reserved (Do not change) Fixed to OFF OFF
3
Transmission speed selections
See the “ Transmission Speed (DIP Switches 3/
4)” table below.
ON
4 ON
5 DSR (hardware) reset Enabled Disabled OFF
6 Reserved (Do not change) Fixed to OFF OFF
7 Reserved (Do not change) Fixed to OFF OFF
8 Reserved (Do not change) Fixed to OFF OFF
Transmission speed (bps) SW 3 SW 4
Setting with the memory switch*:
2400, 4800, 9600, 19200 (initial setting), 38400, 57600, 115200
ON ON
9600 OFF ON
19200 ON OFF
38400 OFF OFF
Depending on print conditions, such as print duty, print head temperature, and data 
transmission speed, print speed is automatically adjusted, which can cause white lines due 
to intermittent print (the motor sometimes stops). To avoid this, set the transmission speed 
higher or keep the print speed constant by setting it lower. (See "Setting the Memory 
Switches" on page 45.)